Robert ("Bob") Lutz (born August 29, 1947) was a top amateur and professional tennis player of the 1960s and 1970s. He and his longtime partner Stan Smith were one of the best doubles teams of all time. Together they won many major titles all over the world. Bud Collins ranked Lutz as World No. 7 in 1972. Between 1967 and 1977 he was ranked among the top-10 American players 8 times, with his highest ranking being No. 5 in both 1968 and 1970.